Irish formÓ Ceallaigh
Meaning'descendant of Ceallach' (war, contention)
CountiesGalway, Roscommon, Dublin, Mayo
Other spellings3
Origin of the Kelly name
Woulfe lists nine Ó Ceallaigh families as 'the best known': (1) Ui Maine, chiefs in Galway and Roscommon 'down to the reign of Elizabeth'; (2) Breagh, lords in Meath and north Co. Dublin; (3) Cinel Eachach, Loughinsholin, Co. Derry; (4–6) Leighe, Magh Druchtain and Gallen, 'all three in Leix'; (7) Ui Teigh, north Co. Wicklow; (8) Árd Ó gCeallaigh, Co. Sligo; (9) Corca Laoighdhe, south-west Co. Cork.[1]
- 1014 (Woulfe)Tadhg Mór Ó Ceallaigh fell at Clontarf (Woulfe 1014; Four Masters enter it under 1013).[1][9]
- 1292Four Masters: 'Congalagh O'Kelly, Lord of Bregia, died.' Woulfe: Conghalach, last lord of Breagh, died 1292.[1][10]
- 1351Four Masters: William O'Kelly gave a Christmas invitation to the learned of Ireland.[11]
- 1353Four Masters: Kilconnell friary founded by William O'Kelly, Lord of Hy-Many.[12]
- 1690'O KELLY' appears in Sir James Terry's list of Irish septs.[8]
- 18901,242 birth entries including spelling varieties (1,238 spelled Kelly).[4][6]
Kelly surname: questions
What does the surname Kelly mean?
Woulfe gives Kelly as a form of Ó Ceallaigh, 'descendant of Ceallach', a personal name he glosses as 'war, contention'.[1]
Is Kelly an Irish name?
Yes. Woulfe lists O'Kelly, Kelly and Kelley as anglicised forms of Ó Ceallaigh. He also gives Kelly as a form of other Irish surnames, such as Mac Ceallaigh and Mac Giolla Cheallaigh, so not every Kelly descends from one family.[1][2][3]
Where in Ireland is the Kelly name from?
Woulfe lists nine Ó Ceallaigh families as the best known, among them those of Ui Maine (Galway and Roscommon) and Breagh (Meath and north Co. Dublin). In 1890 Kelly was 'found in every County in Ireland—chiefly, however, in Dublin, Galway, Mayo, Roscommon, and Cork' (Matheson).[1][4]
How common is Kelly in Ireland?
Matheson's table from the 1890 births index puts Kelly second only to Murphy, with an estimated 55,900 people.[5]
Is Kelly also a Manx name?
Woulfe says Mac Ceallaigh 'is also the name of the Kellys of the Isle of Man'.[2]